package com.zzyl.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.crypto.digest.BCrypt;
import cn.hutool.json.JSONUtil;
import com.zzyl.constant.CacheConstant;
import com.zzyl.constant.SuperConstant;
import com.zzyl.dto.LoginDto;
import com.zzyl.entity.Resource;
import com.zzyl.entity.User;
import com.zzyl.enums.BasicEnum;
import com.zzyl.exception.BaseException;
import com.zzyl.mapper.ResourceMapper;
import com.zzyl.mapper.UserMapper;
import com.zzyl.properties.JwtTokenManagerProperties;
import com.zzyl.properties.SecurityConfigProperties;
import com.zzyl.service.LoginService;
import com.zzyl.utils.JwtUtil;
import com.zzyl.utils.ObjectUtil;
import com.zzyl.vo.UserVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private JwtTokenManagerProperties jwtTokenManagerProperties;

    @Autowired
    private ResourceMapper resourceMapper;

    @Autowired
    private SecurityConfigProperties securityConfigProperties;


    @Autowired
    private RedisTemplate<String, String> redisTemplate;


    /**
     * 登录
     * @param loginDto
     * @return
     */
    @Override
    public UserVo login(LoginDto loginDto) {
        //根据用户名查询用户
        User user = userMapper.selectByUsername(loginDto.getUsername());
        //判断用户是否为空
        if (ObjectUtil.isEmpty(user)) {
            throw new BaseException(BasicEnum.LOGIN_FAIL);
        }
        //判断用户是否被禁用
        if (user.getDataState().equals(SuperConstant.DATA_STATE_1)) {
            throw new BaseException(BasicEnum.ACCOUNT_DISABLED);
        }
        //判断密码是否正确
        if (!BCrypt.checkpw(loginDto.getPassword(), user.getPassword())) {
            throw new BaseException(BasicEnum.INCORRECT_PASSWORD);
        }
        //对象转换
        UserVo userVo = BeanUtil.toBean(user, UserVo.class);

        //密码脱敏
        userVo.setPassword("");


        //获取当前用户对应的资源列表
        List<Resource> resourceList = resourceMapper.
                selectListByUserId(userVo.getId());
        //取出request_path
        List<String> urlList = resourceList.stream().
                map(Resource::getRequestPath).
                collect(Collectors.toList());


        /*List<String> urlList = resourceList.stream()
                .map(new Function<Resource, String>() {
                    @Override
                    public String apply(Resource resource) {
                        return resource.getRequestPath();
                    }
                })
                .collect(Collectors.toList());
*/
        //获取白名单url列表
        List<String> publicAccessUrls = securityConfigProperties.
                getPublicAccessUrls();


        urlList.addAll(publicAccessUrls);

        //根据用户生成JWT
        Map<String, Object> claims = new HashMap<>();
        claims.put("currentUser", JSONUtil.toJsonStr(userVo));

        String token = JwtUtil.createJWT
                (jwtTokenManagerProperties.getBase64EncodedSecretKey
                                (), jwtTokenManagerProperties.getTtl(),
                        claims);
//过期时间
        int ttl = jwtTokenManagerProperties.getTtl() / 1000;

        //存储到redis
        redisTemplate.opsForValue().
                set(CacheConstant.PUBLIC_ACCESS_URLS + userVo.getId(), JSONUtil.toJsonStr(urlList),
                ttl, TimeUnit.SECONDS);
        userVo.setUserToken(token);

        return userVo;

    }
}
